Abstract: The processing and performance of continuous carbon fiber reinforced polyethersulphone(PES)were evaluated.An improved method for fabricating prepregs of continuous fiber/thermoplastic composites was suggested and an optimum forming process was supplied.The obtained T300/PES composite showed low void rate and excellent mechanical performance,the apparent interlaminar shear strength being as high as 82.7MPa.Lastly,the fracture modes and morphologies of T300/PES composite were analysed.